Question about Dell OptiPlex SX270 PC Desktop
System went down on Sunday. Power supply was not the problem. Holding the power button in for 10 secs or replacing the flea battery did not help. I believe it is the motherboard. How do I remove/replace the motherboard? Are there a set of instructions somewhere?
Its easy on most dells, open the case, disconnect all the cables and remove anything in the way, then just unscrew the boards fastening screws that hold it down. Sometimes its a single screw that holds the board in place, once removed, the board slides out. First try reseating everything, Pull out the memory and put it back in, same for the video card and any other devices, unplug it also and pull out the bios battery for 30 seconds so everything resets.
If the Capacitors on the mother board are swollen or have discharge, then the board is what went bad, The capacitors are the round black cyclinders that stick up from the board, there supposed to have flat tops, like tiiny little soda cans, but when they get heat damage or go bad, the get domes and split at the top and eventually rupture.
Here is the link to the dell site for the repair manual.
You can also go to ( www.support.dell.com )
In the middle it has a link to MANUALS, then it has a way for you to look it up by make and model of your PC.
Posted on Feb 23, 2008
Always start with the simplest solutions. Make sure the wall outlet isn't blown. Check to make sure you power bar isn't shut off.
If those aren't the problems, please give a more detailed description of what you were doing last, what you were downloading (inf anything). Sites you visited...any hardware changes...bios updates..cmos changes....
Posted on Feb 23, 2008
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